US3214651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device base electrode assembly and process for producing the same
Assignee: Westinghouse Electric Corp
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Filing: 1961-10-27
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Granted: 1965-10-26
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Arie Van Dyck
- 👤 Csakvari Tibor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:03
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; B; B22; B22F; B22F5/00; B22F7/00; B22F7/06; B22F7/08; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/12486; Y10T428/12493; Y10T428/12528; Y10T428/12986
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A SEMICONDUCTOR RECTIFIER DEVICE COMPRISING A SINTERED DISK COMPACT CONSISTING OF MOLYBDENUM AND A METAL EYELET HAVING A FLAT HEAD AND A HOLLOW STEM WITH THE HEAD EMBEDDED FLUSH AT THE CENTER OF ONE FACE OF THE DISK, THE HEAD AND COMPACT BEING METALLURGICALLY JOINED TO PROVIDE FOR GOOD THERMAL AND ELECTRICAL CONDUCTIVITY, AN ELECTRICAL CONDUCTOR WELDED TO THE HOLLOW STEM OF THE EYELET AND A SEMICONDUCTOR ELEMENT SOLDERED TO THE OTHER FACE OF SAID DISK AND A CONTACT MEMBER HAVING AN ELECTRICAL CONDUCTOR LEAD ATTACHED THERETO SOLDERED TO THE UPPER SURFACE OF THE SEMICONDUCTOR ELEMENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |